Automobile radiator



sept. 24, 1929. P, H ONERGAN 1,728,973

AUTOMOBILE RADIATOR Filed Aug. 2 2, 1927 S14/vanto@ Gbr/021141.11

Patented Sept. 24, 1929 PATRICK I-I. LONERGAN, OF WHITING, INDIANA AUTOMOBILE RADIATOR Application filedk August 22, 1927. dSerial No. 214,495.

This invention relates to improvements in the construction of radiators of the type employed in connection with internal combustion engines for the purpose of cooling the water employed in the cooling system.

It is the object of this invention to produce a radiator of the type above referred to which shall be so constructed that it will have a large water capacity and which shall be provided with means for the purpose of readily thawing the water-in case it should accidentally become frozen and which shall also be provided with means for assisting the condensation of vapor during the operation of the engine.

The above and other objects which will be* come apparent and to which attention will be called as the description. proceeds are attained by means of a construction and associagoti'on of elements which will now be described in detail7 reference :tor this purpose being had to the accompanying drawing in which the preferred embodiment of my invention has been illustrated and inwhich:

Fig. 1 is an elevation of the rear surface of my improved radiator', portions thereof being broken away to better disclose the construction; this view also shows the connections from the radiator tothe exhaust mani- 3 fold and the mul'ller connection with the exhaust conduit;

F ig. 2 is `a section taken online 2-2, Fig. 1

Fig. 3 is a fragmentary rear elevation similar to that shown in Fig.` 1 and illustrates a slight modification in the connection; i

Fig. 4 is a section taken on line 4-4, Fig. 1;

F 5 is a section taken on line 5-`5, Fig. 4;

Fig. 6 is a section taken on line 6-6, Fig. and

Fig/r' is a section taken on line 7-7,.Fig. 1.

My improved radiator consists of a plurality of sections which have been indicated by the letter A, which are connected one to the other in the manner illustrated in Fig. 5 in which reference numeral 1 designates the inturned `edges of the side members 2 of each radiator section. The bottom 3 of each section is soldered to the flancesll in the ner shown in tl' is ,figure bottom of 1mi wat au opening; 4f

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through which the water may pass from the section above to the section directly beneath. It will be observed from an `inspection of Fig.l 1 that openings 4 are located in opposite ends of the adjacent sections so that the water will have to flow back and forth through the several sections in the manner indicated by the arrows in this figure. Each section. is providedv with a plurality of tubes 5 that pass through the saine and connect the front and rear sides in the manner shown in Figs. 5 and 6. The sides 2 of the radiator sections are punched so as to 'provide openings for the tubes 5 and this punching is performed in such a manner that inwardly extending flanges 6 are formed about-the openings and these flanges engage the sides of the tubes in the manner shown in Fig.` 6. After the tubes have been inserted, one end is flared outwardly in the mannerindicated by reference numeral '7. The front ends of the tubes are made with conical outwardly flared sections 8 which are of suchdiameter that the edges of thesev sections come into contactwith each other at their outer eX- rlhe air passes through the `interior of the tubes in a manner quite obvi-l ous from the drawing and this air serves tremities.

to cool the water which surrounds the several tubes. The top of the radiator is formed by a section B which is shaped in the manner shown in Fig. 1, but which is otherwise constructed the same as sections A, which have just been described. The top of section B has been designated by numeral 9 and has a llppe opening 10 which is normally closed by means of a cap 11.4 Secured to the ends of the sections A is a boxing 12 that is formed as shown in Fig. 4. A similar boxing 18 is secured to the bottom of the lowerinost section and connects with the side sections 1Q, so as to form a chamber 14 that extends along the vertical sides of the radiA ator and across the bottom in the mannery petcock 15, is

irn'ention to have the interior iii commiinicatitii with the terminates at 25.

mobile engines.

air at all times. The radiator is provided with tubular projections 16 and 17, which are adapted to receive a hose connection by means of which the interior of the radiator is connected with the usual water jacket employed for the purpose of cooling internal combustion engines. V] hen the engine is in operation, the water becomes heated and due to the difference in specific gravity between the heated water in the water acket and the cooler water in the radiator, a circulation of the water is set up in a manner well understood as this cooling system is quite extensively employed in connection with auto- The tubular member 16 may e connected in series with a pump, it

desired, although this is immaterial as far as the present invention is concerned. I have shown a pipe 18 whose upper end terminates at a point 19 within the lillpipe 10 and which passes through the radiator wall 20 and is connected by means of a flexible tube such as a rubber hose 21 with a short section of pipe 22 that extends through the side ofthe boxing 12 and opens into the interior of chamber 14. Another pipe 23 extends from the interior oit the fillpipe 10 and passes through the radiator wall at 24 and This pipe is provided with av stopcock 26 by means of which the passageway can becontrolled. A short section of flexible tubing such as that indicated by numeral 26 connects the end 25 of pipe 23 with the upper end 27 of a pipe28 which extends through the interior of the chamber 14 along one side of the radiator and which emerges from the chamber at point 29. That part of this conduit or pipe which has been deignated by numeral 3() connects with the mufller 31 in the manner shown in Fig. 1. Another pipe 32 connects the interior ot the exhaust manifold 33 with the interior of chamber 14. A short section of pipe A341: extends through the wall of pipe 32 in the manner shown in Fig. 7 and is curved'fin such a manner that the portion ot this pipe that lies within the pipe 32 opens inthe direction of the chamber 14:. This short section of pipe 34 cooperates with the pipe 32 to form an inspirator by means of which air is introduced int-o chamber 1K1 and finally conducted to the interior of the radiator by means of pipe 18.

My improved radiator operates in the following manner: Let us assume that the radiator has been connected with the water jacket of an internal combustion engine in the usual manner and that the engine is operating. During the operation of the engine, a large amount of heat is generated which tends to warm the water in the cooling jacket and as this begins to heat it will flow upwardly and enter the radiator through pipe 17. It will then pass downwardly in suecession through section B and through cach of' sections A and will linally emerge through the tubular connection 16, from which it returns to the water jacket. During the passage of the water downwardly through the radiator, it will cool by the radiation that takes place and by contact with the metal surfaces which are being constantly subjected to a current of air. As the engine operates the exhaust gas will pass into the exhausty manifold 'and will pass from this into the muffer 31 Yfrom which they will be discharged through the atmosphere. Since pipe 32 connects the interior of the exhaust manifold with the interior et chamber 14 and since there is usually considerable gas pressure in the exhaust manifold, a portion of the gas will llo'w through pipe 32 and into chamber 14. These gases will fill the chamber and will finally pass through pipes 22 and 18 into the interior of' the radiator in a manner quite apparent from an inspection of Fig. 1. The flow ot gases will produce a suction that tends to cause air to flow inwardly through pipe 34. This air will mix with the exhaust gases and this mixture of air and exhaust gas will finally enter the radiator at point 19. It is evident that gas cannot be continuously introduced into the radiator unless a corresponding volume et gas is permitted to leave and for this purpose pipes 23, .28 and 30 have been provided. During the operation of the engine, water vapors and uncondensed exhaust gases llow from the radiator into the muiiler and mix with the exhaust gases. I have found that iii a sullicient amount of steam or water vapors are mixed with the exhaust gases, that the elfensive odor which usually accompanies these gases is almost entirely neutralized so that the disagreeable effect of exhaust gases that are delivered Ytrom the mul'ller in the usual manner will be absent in my device. This is ot great importance in large cities where a large number of automobiles are continuously discharging` exhaust gases into the atmosphere. e

Attention will now be called to another feature of my invention which I consider to be of great importance. This feature consists of tubes 35 that extend lengthwise through each of the radiator sections A and have their ends in communication with the vertical sections of chambersll. Tubes 35 permit gases and water vapors to flow from one side of the radiator to the other' and therefore assist in cooling the water during the summer time and in winter they are especially valuable for the reason that if the water circulation should be stopped on account j by helping to melt the frozen water within the sections and to reestablish the circulation of the water in the cooling system.

In Fig. 3 I have shown the tubular connector 26 removed from the pipes 23 and 27. IVhen this section is removed the gas that escaped through pipe 23 will of course pass into the atmosphere at 25 and will not pass along pipes 28 and 30 in the manner above described. V] hen the section 26 is removed and the valve 26 is open, there will be a regular flow of gas through the interior of the radiator due to the lessened 'friction in the pipes and therefore there will be a greater amount of condensation of vapors which is very desirabie during hot weather as it prevents the abnormal loss of water which might otherwise take place.

From the above .it will be apparent that I have provided a novel radiator construetion by means of which several d esirable results are obtained and that I have also provided an improved cooling system in which the interior of the radiator is connected with the exhaust conduits from the engine in such a way that exhaust gases and air are'constantly circulated through the interior ot' the radiator above the water level therein.

I want to call attention to thefact that with a radiator constructed as shown on the drawing and described above, that all of lthe soldering can be done from the outside and this greatly simplifies the manufacture and repair. t

Another advantage of the construction shown is that if any of the tubes 5 should spring a leak the two ends of the leaking` tube may be closed by suitable plugs or corks and the loss of water thereby prevented.

Owing to the fact that the construction is such that the water space between tubes 5 is quite large, it is unnecessary to provide the ordinary top and bottom tanks and the construction is thereby simplified and cheapened. In my radiator tubes 5 are used from the top to the bottom in the manner shown.

I also want to call attention to the fact that tubes 5 are spaced apart at least one quarter of an inch, which gives greater water capacity and consequently greater expansion space. This also permits solids to settle to the bottom without obstructing the passageways and permits steam bubbles to pass upwardly more freely than if the passages were smaller. On account of this feature of the construction there will always be a free circulation of water at all times.

Having thus described my invention what I claim as new is:

l. A radiator comprising a central core section of substantially rectangular shape, a chamber enclosing the two sides and the bottom7 means for establishing communication between the upper end of said chamber and that portion of the radiator above the water level and a plurality of tubes that extend through the radiator core and have their ends in communication with the chambers along the sides of the core.

2. A radiator comprising a central core section of substantially rectangular shape, `a chamber enclosing the two sides and the bottom7 means 'for establishing communication between the upper end of said chamber and that portion of the radiator above the water level and a plurality of tubes that extend through the radiator core and have their ends in communication with the chambers along the sides of the core, that portion of the chamber that extends across the bottom having an' opening.

3. A radiator comprising a plurality of superposed core sections formed into a substantially rectangular core7 a boxing secured to the sides and the bottom so as to form a chamber that encloses three sides of the core, a tube extending lengthwise through each section, said tubes having their ends in communication with said chamber and a tube connecting said chamberwith the upper portion of the core.

4L. A radiator comprising a plurality of superposed core sections formed into a substantially rectangular core, a boxing secured to the sides and the bottom so as to form a chamber that encloses three sides of the core, a tube extending lengthwise through each section, said tubes having their ends in communication with said chamber and a tube connecting said chamber with the upper portion of the core, that portion of the boxing that extends across the bottom of the core having an opening in communication with the atmosphere.

In testimony whereof I aix my signature.

PATRICK II. LONERGAN.

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